Reenforcement for concrete structures



QCL I v J. H. HOLMGREEN REENFORCEMENT FOR CONCRETE STRUCTURES Filed Nov. 9, 1922 2 Sheets-Sheet 1 Z] rwemtoz akin-cm @tj JuliflsHHolmgreen Filed Nov. 9, 1922 J. H. HOLMGREEN REENFORCEMENT FOR CONCRETE STRUCTURES 2 Sheets-Sheet 2 Julius HHoImgreen Patented Oct. 21, 1924.

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REENFORGEMENE FOR CONCRETE STRUCTURES.

Application filed November To all whom it may concern:

Be it known that I, JULIUS H. -HOLM- GREEN, a citizen of the United States, re.- siding at San Antonio, in the county of Bexar and State of Texas, have invented certain new and useful Improvements in Reenforcements for Concrete Structures, of

which the following is a specification.

My said invention relates to a spacer primarily intended to be used in connection with reenforcements for concrete structures and it is an object of the same to provide a device of the character described which shall be light in weight and simple and cheap in construction. As is well known to those skilled in the art, many varieties of spacers have been. devised andplaced on the market, but they are usually heavy and cumbersome and therefore awkward in use and wasteful of material.

A further object of the invention is to provide an improved reenforcement for concrete structures by the use of said spacer. A subsidiary object is to provide an improved joint for intersecting rods or bars, such as are used in concrete structures, by the use of my spacer.

Referring to the accompanying drawings, which are made a part hereof and on which similar reference characters indicate similar parts,

Figure 1 is a perspective of the spacer,

Figure 2 a similar view of a joint formed by the use of the spacer,

Figure 3 a reenforcing parts joined by my spacer,

Figure 4 a similar view of a form of different character,

Figure 5 a reenforcing crete column,

Figure 6 shows a modified spacer,

Figure 7 a structure in which itis used, and

Figure 8 another modified form,

In the drawings reference character 10 indicates the body portion of the spacer, this portion consisting of a wire or red like body to which are permanently secured cross-wires having free ends 11 and 12 best shown in Figure 1. In the drawing the cross-Wires are shown as connected to the body wire midway of their ends as by spot welding" but various other means may be used without departing from the spirit' of my invention. The cross wires will usually,

form made up of form for a con- 9,1922. Serial No. 599,888.

but not necessarily, be weaker than the main wire.

The remaining figures illustrate different structures made by the use of my spacer and different ways of manipulating the cross-wires to form such structures. In F gure '2 is shown a joint composed of a pair of cross members 13 and 14:. The spacer lies adjacent to one of them with its body 10 in this instance parallel thereto. The free end 11- is bentaround the upright 13 andthe free end 12 is bent diagonally across the member 14 and then wound about the same at thefar side of the member 13.

In Figure 3 there is shown a reenforcement suitable for reenforcing slabs in floors and roofs. This reenforcement comprises temperature rods having parallel straight parts at 15, 16 and 17 connected by inclined parts 18 whereby the parts 15 and 17 will lie in the sameplane and the part 16, will lie in a plane elevated or depressed relatively to the others. The temperature bars are connected by transverse bars or rods 19 and spacers for the device having their body members 10 arranged parallel to the bars 19. In one form of joint here shown the end 11 of each spacer is wound about the bar 19 above the temperature rod and the end 12 is bent downward diagonally over the temperature rod and is then wound about the same at the other side of the bar 19 from the main or body wire. In another form shown in connection with the middle one of thebars 19 the end 11 is wound about said .bar above the temperature rod and the end 12 is bent to the rear and diagonally across the joint and is then wound about the bar19 at the opposite side ofthe temperature rod. t

Figure 4 shows a footing mat or reenforcement for footings either for wall foundations or column foundations, this structure being applicable also for the reen forcement of walls, The structure comprises a-set of parallel members running in one direction and a second 'set of; parallel members 21 running in theopposite direction. The spacers are arrangedto cross; each other at intervals greater than tl1ose between successive reenforcing members, the body members 10 of the spacers of one set lying adjacent'certain of the members 20 and the body membersof the other set lying adjacent certain of the transverse members- 21.

In this figure the spacers are shown as hav ing end 11 of each cross wire bent around a member 21 and the end 12 bent diagonally across the adjacent member 20 and then around the same and into juxtaposition with the portion 11.

Figure 5 shows a column reenforcement comprising a coiled rod 22 having convolutions spaced from each other and held in spaced relation by rods 23 extending longi-.

tudinally of the coil. Alongside each of said rods is a spacer having its body 10 parallel to the rod 23 and its end 11 wound about said rod while the end 12 is wound about the coiled rod 22. It will be evident to those skilled in the art that such a reenforcement can be collapsed for storage and shipment.

I While I have shown a preferred form of spacer and a few ways of using the same I do not limit myself to what is shown in the drawings and described in the specification, as other forms and structures falling within the scope of my invention as defined in the appended claims will occur to those skilled in the art.

Figures 6 and 8 show examples of such modifications. In Figure 6 the upper and lower wires (or any other preferred interspersed or intercalated wires) are similar to those of Figure 1, and the branches 12' serve to hold the spacer in place by bending them about supports such; e. g., as shown at 20 in Figure 7. The remaining crosswires extend only to one side of the stem 10 at 11' and serve to hold in spaced relation bars or rods 21 or equivalent devices which may, as in the case of other devices herein illustrated, occur in a single fiat fabric or in a series of fabrics arranged parallel to one another or otherwise, or in many other forms. In the figure the ends 11' are shown as broken off so short that ends 12' are necessary for supporting the spacer but it is preferable to extend the Wires 11' sufficiently so that they can be wound about both upright and transverse bars in a manner somewhat like the middle jointsin Figure 3 and then the parts 12 can be omitted entirely.

In Figure 8 tie-wires 11" are joined directly to the reinforcing rod 20 without any spacing wire at 10, or if preferred, a spacmg wire such as that shown 1n Figures 1 and 6 could be welded or otherwise connected directly'to the rodat 20, the essential feature of this construction being that the tie-wires cannot have any movement lengthwise of the reinforcing rod.

In the specification and claims terms of fixed meaning have been used for clear definition without any intention of limiting the invention except as required by the prior art. The term tie, however, is intended to indicate a relatively permanent attachment two members by a third member merely contacting but not secured to the first two members.

Having thus fully described my said invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a reenforcement for concrete, a joint comprising a pair of rods arranged in in tersecting relation, and the spacer consisting of a wire parallel to one of said rods with a relatively short cross-wire secured tosaid wire and having its free ends wound about the respective, rods, substantially. as set forth. 7

2. In areenforcement for concrete, a joint comprising areenforcing rod, a second reinforcing rod extending transversely thereof, and a spacer havmg a main wire lying ad acent to one of said rods, with a cross-wire secured thereto and wound at one end about intersections of said members the one end of each wire being adapted to be wound about a member belonging to one of said series and the other end about a member belonging to the other, substantially as set forth.

4. In a reenforcement for concrete structures, aset of contiguous relatively rigid parts forming a series extending in one direction, a second set of contiguous relatively rigid parts forming a set extending across the first, and independent means for joining said parts at. the intersections, and wires on which said means are located in spaced rela tion, substantially as set forth.

5. In a reenforcement for concrete structures a set of contiguous relatively rigid parts forming a series extending in one direction, a second set of contiguous relatively rigid parts forming a set extending across joining the bars to the rod at the inter-- sections, and means permanently supporting said joining means in spaced relation to each other, substantially as set forth. y

7 In a collapsible reenforcement for concrete columns a coiled rod or bar having spaced convolutions, one or more bars extending longitudinally of the coil and spacing means for the convolutions comprising Wires lying parallel to the longitudinal bars, and cross-wires secured to said parallel wires and wound at their free opposite ends about the coiled rod and the adjacent bar respectively, substantially as set forth.

8. In a reenforcement for concrete structures and the like, a series of similarly located reenforcing members, and a spacer therefor having a rodlike body and laterally extending wires welded thereto adapted to be Wound about said reenforcing members, substantially as set forth.

9. A spacer for concrete reinforcing devices and the like comprising a rigid linear support and short flexible tying means at spaced intervals thereon adapted to be tied to adjacent reinforcing devices, said spacer being independent of the reenforcing devices, substantially asset forth.

10. In a reenforcement for concrete, a re enforcing bar, a Wire extending along the reenforcing bar parallel thereto, and short wires permanently attached to the said wire certain of said short wires being wound about said reenforcing bar, substantially as set forth.

11. As an article of manufacture, a spacer for concrete reenforcing devices consisting of a longitudinal wire with short tie wires permanently attached thereto and having free ends for the purpose of being Wound about reinforcing members certain of said short tie wires projecting at opposite sides from the first wire, substantially as set forth.

12. In a reenforcement for concrete, a reenforcing bar, a wire extending along the reenforcing bar and permanently secured thereto, and short wires permanently attached to said wire adapted to be permanently connected to adjacent reenforcing devices, substantially as set forth.

13. As an article of manufacture, a spacer for concrete reenforcing devices consisting of a rigid linear support with short flexible wires permanently attached thereto at spaced intervals whereby said Wires may be permanently secured by distortion to elements of the reenforcing independent of the spacer, substantially as set forth.

In witness whereof, I have hereunto set my hand and seal at San Antonio, Texas, this 20th day of October, A. D. nineteen hundred and twenty-two.

JULIUS HERMAN HOLMGREEN.

Witnesses:

' R. J. HoLMGRnEN,

W. B. bMrrH. 

